Three-dimensional heat transfer in a particulate bed in a rotary drum studied via the discrete element method--颗粒学报PARTICUOLOGY

Yazdani, E., & Hassan Hashemabadi, S. (2020). Three-dimensional heat transfer in a particulate bed in a rotary drum studied via the discrete element method. Particuology, 51, 155-162. https://doi.org/10.1016/j.partic.2019.10.007

Three-dimensional heat transfer in a particulate bed in a rotary drum studied via the discrete element method

Esmaeil Yazdani, Seyed Hassan Hashemabadi ^*

Computational Fluid Dynamics (CFD) Research Laboratory, School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology (IUST), 16846-13114 Tehran, Iran

10.1016/j.partic.2019.10.007

Volume 51, August 2020, Pages 155-162

Received 5 June 2018, Revised 20 October 2019, Accepted 24 October 2019, Available online 6 January 2020, Version of Record 11 April 2020.

E-mail: hashemabadi@iust.ac.ir

Highlights

Abstract

We simulated three-dimensional heat transfer inside a horizontal rotating drum using the discrete element method and a thermal conduction model. The aim was to determine the effect of end-wall heating on thermal behavior of a granular bed. The simulation showed that the end-wall heating significantly affects the axial temperature profile of the bed, particularly when the length-to-diameter ratio is low. Particles near the wall heated faster and became more thermally uniform than those in the center of the drum. The region affected by the end heating gradually increased over time. Increasing the rotation speed enhanced the heat conduction rate, and increasing the fill level reduced the mean temperature and thermal uniformity of the granular bed. Heat transfer was also simulated for drums with different length-to-diameter ratios.

Graphical abstract

Keywords

Discrete element method; Three-dimensional heat transfer; Rotary drum; Numerical simulation; Axial temperature; Particulate bed

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